- Author: Moritz Schlick
- Language: English
- Year: 1979
- Author: Jeffrey Bub
- Language: English
- Year: 1974
- Author: Richmond H. Thomason
- Language: English
- Year: 1985
- Author: Hans Kelsen
- Language: English
- Year: 1973
- Author: Ixaru Liviu Gr
- Language: English
- Year: 1984
- Author: Liviu Gr. Ixaru
- Language: English
- Year: 1984
- Author: Franz von Kutschera
- Language: English
- Year: 1975
- Author: Reichenbach Hans
- Language: English
- Year: 1978
- Author: Reichenbach Hans
- Language: English
- Year: 1978
- Author: Topolski Jerzy
- Language: English
- Year: 1977